This problem has been going on for awhile. I have disconnected the battery at one point so I can understand why ive got some of the codes, but the two which I believe are causing the issues are P0441 and P0118.
I suspect the coolant temp sensor has failed confusing the computer when cold and making it run rough until its warmed up but i wasnt sure if the P0441 fault would only have an effect when cold. Is it possibe these two are unrelated but are both issues?
Any help would be great.
Car has 148k on it.
Thanks

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Weird thing is ive reset all these fault codes, drove the car today, still rain poorly, but the faults havent come up again.
Also, i had a CEL come on about a week ago, it was on for about 2 days and then just went away by itself. I didnt have the VAGCOM then so couldnt check what it was.,

Just took it for a drive running misfire measuring blocks. Cylinder 3 misfired under load and when cold but goes away when hitting boost. I'm
Going with faulty injector?
Will swap cool pack to another cylinder to check though.
Will still replace other valve while engine cover is off thiugh

There is a TSB and updated electrical portion of your ignition switch part number 1K0 905 865 A.
There are also 2 TSB's for you P0440 fault. Most likely a bad n80 like previously stated. You can take it off and see if it holds vacuum and if theres carbon built up inside it. If it fails basic setting 71 you can clamp the line off in front of the n80 and re-run the test. If it passes N80 is faulty. You ECT freeze frame looks to be reading at -40 C unless im mistaken. That is most likely bad too. I've seen MAF wiring about 10 inches back inside the loom break and fray and the pins at the connector break, may be worth a peak. Heavy carbon on valves may be causing your cold idle issues as well

Thanks for your help.
Whats the best place to find the TSB's? Are they part of the bentley service manuals (im just waiting for mine to arrive still) or just searc online?
The -40C reading when i had it disconnected to see if it was making any difference, thats what i suspect anyway as it hasnt returned since.
Its definitely cylinder 3 missing even after swapping around the coil pack to a different cylinder.
It is still slightly evident too when it has wamred up, but not near as bad.
I will replace the N80 valve etc, but i think the injector on cyliner 3 has packed it up.
The reason i believe this is that when the vehicle is running enrichment map when cold, that injector cant supply/over supplies, but when it does not need to run the car is rich to warm up, the injector doesnt struggle as much.....would this sound logical at all?